简便运算
454500/125*45
454500/125*45 =10100/125=10100*8/125*8=80800/1000=80.8
你好! 454500/125*45 有两种理解. 方案一: 454500/125*45 =454500÷(125×45) =454500÷45÷125 =10100÷125 =10000÷125+100÷125 =80+0.8 =80.8 方案二: 454500÷125×45 =454500÷(125÷45) =454500÷(25÷9) =454500÷25×9 =4545×4×9 =18180×(10-1) =181800-18180 =163620 请比较原题选择正确答案.
454500/(125*45) =9*5*10100/(125*9*5) =101*100/125 =101/5 454500/125*45 =(9*5*10100/(125*9*5) =10100/(5*25) =404/5 需要特别注意运算顺序!
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